This individual participant data meta-analysis is the most intensive possible evaluation of the effectiveness of early intensive applied behaviour analysis-based interventions for pre-school autistic children compared with treatment as usual/eclectic interventions. Data from 491 participants (originally collected in 10 studies) were included.…

Treatments for individuals with developmental disabilities regularly include assessments of individual choice and preference. These procedures assist in the development, design, and maintenance of effective, evidence-based practices. Despite widespread use, these assessments may or may not accurately identify reinforcers that will be effective in…